Clevis and pin



(No Model.)

W.. H. BAKER.

I I. GLEVISAND PIN. No. 389,493. Patented Sept. 11, 1888.

IJVVENTOR. W a Q I flttorrwy N PETERS. Pholwlithugngher. Wnhingiun. n c.

' UNITED STATES PATENT OFFICE.

WILLIAM H. BAKER, OF PONTIAC,

MICHIGAN.

CLEVIS AND PIN.

SPECIFICATION forming part of Letters Patent No. 389,493, datedSeptember 11, 1888.

Application filed March 5, 1888. Serial No. 266,135. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM H. BAKER, a citizen of the United States,residing at Pontiac, in the county of Oakland and State of Michigan,have invented certain new and useful Improvements in Glevises, of whichthe following is a specification, reference being had therein to theaccompanying drawings.

My invention relates to certain new and useful improvements in clevises,and the object I have in view is to provlde a simple and durplow, drag,or other implement without the use of intermediate split links, rings,twisted links, or other devices usually employed, as will more fullyhereinafter appear.

The invention consists in certain novel features of constructiomwhichwill be presently pointed out and claimed.

Referring to the accompanying drawings, which form a part of thisspecification, Figure 1 represents a perspective view of my improvedclevis complete; Fig. 2, an elevation, partly in section; Fig. 3,-atransverse vertical sectional View; Fig. 4, a perspective view of aportion of the clevis; Fig. 5, a perspective view of the locking-pindetached; and Fig. 6, a longitudinal sectional view of the clevis properdetached.

Referring to the drawings by letters, A designates the body of theclevis, which is preferably cast in a single piece, and consists,essentially, of two parallel horizontal arms, 13 B, united at theirforward ends by a rounded connecting portion or web, 0, the lower one ofthese arms, B,being provided with a forwardlyextending hook, D, which iscast integral with the arm, and is made very strong and tapered off atits forward end. The web or connecting portion C is provided with acentral horizont-al aperture, E, which communicates with a cylindricalrecess, F, formed in the inner wall of this portion 0 between the twoarms B B.

The letter G designates a ring, which is pro- .vided with a radialextension or arm, H, the

end of this arm being provided with a head or flange, I, as shown inFig. 2. By means of this headed pin the ring G is pivotally or swivellysecured to the clevis A, the pin being passed through the aperture E,and its head I being formed on it in such a manner as to rest loosely inthe recess F in the inner wall of the portion C. It will thus be seenthat the ring is attached to the clevis proper in a permanent andpositive manner, while at the same time the two parts may be turnedindependently of each other.

The rear free ends of the arms B B are provided with coincident verticalapertures J J, through which a headed pin, K, is passed,the uppersurface of the upper arm surrounding the aperture in it being providedwith a circular depression or recess, L, for the reception of thecircular head M of the said pin. The head M of this locking-pin isprovided With a radial lug or pin, N, projecting from its periphery, andpreferably rounded on its under side. (Shown in Fig. 5.) In the uppersurface of the arm B is a radial recess or short groove, 0, which isadjacent to and communicates with the depression L, this recess 0 beingfor the purpose of receiving the lug N on the pin when the same islocked in position, as will presently be set forth. Formed near thelower end of the pin K is an annular groove, 1, which extends entirelyaround the pin and communicates at one side with a short verticalgroove, Q, which extends to the lower end of the pin, as clearly shownin Figs. 3 and 5. Projecting radially into the aperture J in the lowerarm B is a lug or pin, R, which, when the locking-pin K is in place inthe aperture, rests in the annular groove P in the lower end of the pin,as shown in Fig. 3. The lower end of the pin K is provided with a smallhole, whereby, by means of a nail or piece of wire or any suitableinstrument to be inserted in this hole, the pin may be readily turned sothat it may be removed and the clevis detached from the plow orimplement to which it may be connected. When it is desired to attachthis clevis to a whiffletree, plow, or other similar implement providedwith the usual apertures for a clevis, the pin K is dropped through theapertures J and through the holes in the implement. The pin is thenturned until the vertical groove Q in the lower end thereof registerswith the lug R, projecting into the lower aperture, J, when it is againdropped until the said lug rests in the annular groove P, when it isagain turned partially around until the radial lug N on the head of thepin drops into its recess in the upper surface of the upper arm, 13. Thepin is then looked securely in place against accidental displacement.The metallic arms 13 B, being connected together only at one end, aresomewhat elastic or springy at their free ends, and this elasticity isutilized to assist in holding or locking the pin K in place, as follows:The pin is made such a length that when it is put in place in theapertures it is necessary to press the arms B slightly toward eachother, in order to permit the lug R on the lower arm to pass into theannular groove 1. Now, when the arms B are released, their tendency tospring apart will cause the rounded portion ol the radial lug N on thehead of the pin to press with considerable force upon the upper surfaceof the upper arm, and when the pin is turned until the lug N drops intoits recess 0 the upward pressure of the arm is instantly removed fromthe lug by the arm assuming its normal position again. The rounded undersurface of the lug N permits the same to be moved out of its recess withease when the pin is to be removed. Thus, it will be seen that in orderto remove the pin it is necessary to press the arms slightly toward eachother and partially revolve the pin.

The hook D, formed on the lower side of the lower arm, B, is for thepurpose of attaching the clevis to the chain of a drag, barrow, or otherimplement that is not provided with the usual aperture for a clevis. Theobject in swiveling the ring G (which is connected in the usual mannerto the work-harness on the wwllllllllllllllllllllw connections usuallyemployed l l l l horse) is to permit the clevis to be turned freely andindependently of it, whereby the use of intermediate twisted links andother between the clevis and the implement to which it is attached isentirely obv ated.

It will be observed that I have a very simple and durable device whichwill be eminently useful, especially to farmers, as it may be attachedinstantly and without the use of tools or extra links to any farmimplement or machine.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-- The combination of the clevisA, its upper arm being provided with a recess, 0, which connects withthe bolt hole, and the lower arm being provided with a lug, R, whichextends into the bolthole therein, ot' the bolt K, havinga lug, N, uponits head adapted to enter the recess 0 and lock the bolt againstturning, the said bolt K being provided with an annular groove, P, and aconnecting vertical groove, Q, these grooves engaging with the lug R ofthe lower bolt-hole and serving to secure the pin against withdrawal,substantially as described.

In testimony whereof I afiix my presence of two witnesses.

WILLIAM H. BAKER.

signature in Vitnessrs:

(Jr-ms. D. DAVIS, O. D. Jos'r.

